Schaefer fiberglass exhaust fans are designed and built to be highly efficient (high cfm/watt), long lived and competitively priced fans for agricultural and other applications.The fiberglass exhaust fans are used worldwide to exhaust high volumes of air from factories, warehouses, garages and other locations, where building owners value low capital cost and low operating cost. Fans ship fully assembled with aluminum inlet shutters, self-adjusting belt tensioner and powder coated outlet guard.